This Post details the daily wind power generation data for the AEMO coverage area in Australia. For the background information, refer to the Introductory Post at this link.

Each image is shown here at a smaller size to fit on the page alongside the data for that day. If you click on each image, it will open on a new page and at a larger size so you can better see the detail.

Note also that on some days, there will be a scale change for the main wind power image, and that even though images may look similar in shape for the power generation black line on the graph when compared to other days, that scale (the total power shown on the left hand vertical axis) has been changed to show the graph at a larger size to better fit the image for that graph.

Sunday 29th March 2020

Total Wind Power Generation

This image shows the total power generated across the whole day by every wind plant in this vast AEMO coverage area for Australia.

The total Nameplate for all these wind plants changes as each new wind plant comes on line delivering power to the grid. That current Nameplate is 6960MW, and this is from the current total of 57 wind plants.

Note that the shape of this wind power load curve does not follow the shape of the main load curve for total power generation, and that is seen in the image below, the solid black line across the top of the image for that graph. Wind power generates its power only when the wind is blowing, hence it does not follow the actual power generation Load Curve, which is also the the exact same shaped curve as for actual power consumption.

For this data, I have added the times for the daily minimum, and the daily maximum, to show how they do not correlate with the actual times of minimum power consumption (around 4AM each day) and maximum power consumption, the evening Peak. (at around 6.40PM in Winter and earlier during the Summer Months.)

Daily Minimum – 1467MW (6.50PM)

Daily Maximum – 3912MW (5.40AM)

Average Wind Generation – 2635MW

Total Generated Power – 63.24GWH

Percentage Supplied By Wind Power At The Low Point For The Day – 6.5%

Percentage Supplied By Wind Power At Peak Power For The Day – 1600MW of 23000MW – 6.40PM – 6.96%

Average Percentage Of Overall Total Power Generation – 13.1%

Daily Operational Capacity Factor – 37.85%

Wind Power Generation Versus Total Power Generation

This image shows the total power generated from all the wind plants in this AEMO coverage area, and compares it to the overall total generated power from every source of power generation, which is the black line at the top of the graph. Wind power is the green coloured area, along the bottom of this graph.

While the green colour in this image looks to be a different shape to the graph above, keep in mind here that the scale is completely different, and that green coloured Wind total is the same as for the image shown above, only with the scale changed so it can fit onto the graph.

Notes

Finding Wind Power Average – On the graph, there are 25 hourly time points, starting with midnight and finishing with midnight. I have added the total at each of those hourly time points together, and divided the resultant total by 25 to give an average in MegaWatts. (MW)

For total power in GWH, multiply the average daily power by 24, and then divide by 1000.

For the Capacity Factor, that is calculated by dividing the average wind generation by the current Nameplate and then multiplying that by 100 to give a percentage.

Weekly UPDATE

Generated wind power total as a Percentage of overall total generated power from every source for this last week – 8.7%

Generated wind power total as a Percentage of overall total generated power from every source for the last year (52 weeks) – 8.6%

Capacity Factor for wind power generation for the last week (7 days) – 28.29%

Capacity Factor for wind power generation for the last year (52 weeks) – 29.68%

Capacity Factor for wind power generation for the longer term (78 Weeks) – 29.38%

Comments For This Day

As was the case yesterday, today was the same, with that peak now coming back to the usual time for that peak in the cooler Months, between 6PM and 7PM, usually around 6.40PM. I can show you that with the graph for power generation from all sources, keeping in mind that power generation is all but completely the same as power consumption. That is shown in the image at right, of the graph for power generation from all the sources. You can see that the maximum for the day was indeed at 6.40PM, shown on the graph as 1840. (again, as with all the images, if you click on the actual image, it will open on a new page and at a much larger size so you can better see the detail) Another thing I mentioned in the text for yesterday was that this is the weekend, when power consumption is always lower than it is on normal working week days, and power consumption for this Sunday was even lower again than it was yesterday, the Saturday, and for this day, Sunday it was around 9% lower than for one of those normal working week days. However, what that does is to (somewhat artificially) increase the percentage of power delivered by wind generation when compared to the overall. This is not due to a major increase in wind generation, but because the total is considerably lower, hence giving the false impression that wind is delivering a greater percentage than usual.

Now, referring to just that upper image of the graph for wind generation, you can see that wind generation was all but at its lowest point for the day at that same time. That average for wind generation for the day of 2635MW gave wind generation a daily operational Capacity Factor of 37.85%, higher than the year round average. Also, again note the difference between the low and the high for the day, and on this day, that range between the two of them was almost 2500MW, again emphasising the fact that wind power can vary by considerable amounts on any given day, and the time between the low and the high was thirteen hours, when it just kept falling away to its low point.

Referring to those weekly Updated figures, note here that across the week, wind delivered right on that year round average for actual supply. The operational Capacity Factor for the week was 28.3% just a tick lower than the year round average, and both those long term averages for that Capacity Factor both remain stuck around that 29.5%.

*****

Anton Lang uses the screen name of TonyfromOz, and he writes at this site, PA Pundits International on topics related to electrical power generation, from all sources, concentrating mainly on Renewable Power, and how the two most favoured methods of renewable power generation, Wind Power and all versions of Solar Power, fail comprehensively to deliver levels of power required to replace traditional power generation. His Bio is at this link.

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